Just installed AWE boost gauge. I'm on the stock ECU ('00 S4 A box) - Page 2

Pie4Foo · 08-26-2005, 12:32 PM

First, in original mBar:

Second, in converted PSI (using 970 mBar as vacuum):

Based on the same log, which was done in 3rd gear, ~70F, 93 octane, 1000 feet. 14 PSI seems high, but at your elevation, who knows.

ryans4 · 08-26-2005, 12:34 PM

rennteknik · 08-26-2005, 12:35 PM

MarkFank · 08-26-2005, 12:40 PM

ryans4 · 08-26-2005, 12:46 PM

..or at least the pressure in the intake manifold will increase since that's where I tap for boost gauge in my car where i drive.

In winters at sea level, I'd peak at 0.7 kgf/cm2 (0.68+ bar or 9.95+ psi). On track in way hot conditions, the car hit a little over 0.8 kgf/cm2 (picture above) which is 0.8 bar or 11.66psi.

Here in vegas at 2k+ feet, I easily hit 0.8 bar (which is when my warning light goes off) since summer has kicked in, I can go past 0.8bar as long as I'm not in 1st gear. If you can get close to 0.9, that's almost 14psi. I rarely catch it, but I'll start flooring it more in the afternoon commute and see how high it's hitting. I'm guessing around 0.85 kgf/cm2.

Oo.et.oO · 08-26-2005, 12:49 PM

S4_4MY30'S · 08-26-2005, 12:50 PM

MarkFank · 08-26-2005, 12:54 PM

it is not unlikely I may hit .9 or above at 4,600 ft in hot weather

ryans4 · 08-26-2005, 12:56 PM

...say 3rd or 4th gear pull up a steep hill at over 4k feet with 91 octane fuel and ambient temps in the high 90's F.

I'd say it's good money. You could always log to compare the boost gauge if you're thinking it's off or reading high.

MarkFank · 08-26-2005, 12:58 PM

recoding my windows & clearing codes. :-) The boost gauge may be reading a bit high as well.

08-26-2005, 12:32 PM	#11
Pie4Foo AudiWorld Senior Member Garage is empty, add now Join Date: Jun 2003 Posts: 1,627	Sounds high. Here are my stock boost curves: First, in original mBar: Second, in converted PSI (using 970 mBar as vacuum): Based on the same log, which was done in 3rd gear, ~70F, 93 octane, 1000 feet. 14 PSI seems high, but at your elevation, who knows. __________________ Car for driving in circles: Lotus Exige Car for driving to the airport: AWE/GIAC Stage 3 S4 Car for the weekday: Hertz rental

08-26-2005, 12:34 PM	#12
ryans4 AudiWorld Super User Garage is empty, add now Join Date: Apr 2000 Posts: 7,308	based on what i've seen comparing sea level to 2k feet, you could easily hit 0.8 bar... __________________

08-26-2005, 12:35 PM	#13
rennteknik Member Garage is empty, add now Join Date: Mar 2003 Posts: 1,211	My car spikes 11 psi and is at 8-9 at redline... all the time... __________________ Money Pit Motorsports 01.5 S4 Avant STG III 95 BMW M3 90 Coupe Quattro 20VT Thanks in no particular order: VAST, AWE, Buehn, ASP, Europrice, Moss@Torque Factory.. All A+ Vendors

08-26-2005, 12:40 PM	#14
MarkFank AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,310	My bad - after STFA looks like it is about .7 bar or 9.8 lbs. __________________ '08 RS4 Avus silver/titanium

08-26-2005, 12:46 PM	#15
ryans4 AudiWorld Super User Garage is empty, add now Join Date: Apr 2000 Posts: 7,308	you're both right and wrong...stock boost will increase in poor conditions... ..or at least the pressure in the intake manifold will increase since that's where I tap for boost gauge in my car where i drive. In winters at sea level, I'd peak at 0.7 kgf/cm2 (0.68+ bar or 9.95+ psi). On track in way hot conditions, the car hit a little over 0.8 kgf/cm2 (picture above) which is 0.8 bar or 11.66psi. Here in vegas at 2k+ feet, I easily hit 0.8 bar (which is when my warning light goes off) since summer has kicked in, I can go past 0.8bar as long as I'm not in 1st gear. If you can get close to 0.9, that's almost 14psi. I rarely catch it, but I'll start flooring it more in the afternoon commute and see how high it's hitting. I'm guessing around 0.85 kgf/cm2. __________________

08-26-2005, 12:49 PM	#16
Oo.et.oO AudiWorld Super User Garage is empty, add now Join Date: Nov 2003 Posts: 5,889	ding. summer i'm normally ~9.5 psi spike to 10ish when it's hot __________________ Gone but not forgotten: 2001 Brilliant Black S4 Avant 6spd. c'mon AoA, where is the B8 A4 3.0 TDi?

08-26-2005, 12:50 PM	#17
S4_4MY30'S AudiWorld Super User Garage is empty, add now Join Date: Oct 2001 Posts: 5,446	shouldn't be all that bad... Don't speed Matt!

08-26-2005, 12:54 PM	#18
MarkFank AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,310	So - like your post above said - if you are hitting .8 in hot conditions at 2k ft altitude it is not unlikely I may hit .9 or above at 4,600 ft in hot weather __________________ '08 RS4 Avus silver/titanium

08-26-2005, 12:56 PM	#19
ryans4 AudiWorld Super User Garage is empty, add now Join Date: Apr 2000 Posts: 7,308	yeah, i think it's totally possible. Especially if you're really on it... ...say 3rd or 4th gear pull up a steep hill at over 4k feet with 91 octane fuel and ambient temps in the high 90's F. I'd say it's good money. You could always log to compare the boost gauge if you're thinking it's off or reading high. __________________

08-26-2005, 12:58 PM	#20
MarkFank AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 13,310	I was on it pretty good. I think I will learn how to use the VAG for more than recoding my windows & clearing codes. :-) The boost gauge may be reading a bit high as well. __________________ '08 RS4 Avus silver/titanium

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